Shuttle-threader.



J. DUFRESNE.

SHUTTLE THRBADER.

APPLIOATION FILED NOV. 26, 1913.

Patented Apr. 21, 1914;

Inventor Attorneys UMBIA PLA JOSEPH DUFRESNE, 0F MONTREAL, QUEBEC, CANADA.

SHUTTLE-THREADER.

Specification of Letters Patent. Patented Apr. 21, 1914:.

Application filed November 26, 1913. Serial No. 803,320.

To all whom it may concern Be it known that I, JOSEPH DUFRES-NE, a citizen of the United States. and residing at 82 Turgeon street, Montreal, Province of Quebec, Canada, have invented certain new and useful Improvements in Shuttle- Threaclers; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention to be hereinafter described relates to threader for shuttles.

In order to more clearly disclose the con struction, operation, and use of the invention, reference should be had to the accompanying drawings forming part of the pres ent application.

Throughout the several figures of the drawings like reference characters designate the same parts.

In the drawings: Figure 1 is a plan view of the device as used; Fig. 2 is an end view of the same; Fig. 3 is a fragmentary, detail, plan view of the thread end of the shuttle; Fig. 4: is a section on line 14 of Fig. 3 looking in the direction of the arrows; and Fig. 5 is a detail of the mounting of the threading needle.

The main objects of the invention are, to provide neat, compact, durable, and efiicient, mechanical means, for threading shuttles, quickly and accurately; such means being capable of being produced at a relatively low cost.

Referring to the drawings in detail, 1 designates the shuttle of usual construction, provided at one end with a small tube 2 set therein at a considerable angle; and provided at its center with a slot 3, which is centrally located in a depression 41 of the shuttle. The depression 4 communicates with the central opening of the shuttle by a channel 5 and is provided with a narrow contiguous groove 6 extending nearly tothe end of the bobbin; for a purpose to be later disclosed. The shuttle 1 is secured in a boxing 7 by means of slidably adjustable holding blocks 8, directed to receive the ends of the shuttle, and slidably operative on the lower side of boxing 7 by bolt and nut means 9 operative through suitable slots therein. Boxing 7 is obliquely slidable on slanting plates 10 which are secured to the base board 11. Suitable bolts 12 in the base of the boxing cooperate with grooves 13 in the board 11 to guide the boxing 7 as well as limit its movement, and secure it in position. The boxing 7 is normally held in raised position by the action of a tension spring 11, the upper end of which is secured to the base board 11 and the lower end of which. is secured to the outer end of the more centrally located bolt 12; as in Fig. 1. To one side of the boxing 7, near the right hand end thereof, there is pivotally secured a curved finger 15, operative through a suitable slotted guiding plate 16, fixedly secured to the boxing. The finger 15 is provided with alower cam portion 17 and a projecting shoulder 18, which cooperates with an adjustable standard 19 secured to the base plate .11, to limit the outward rotation of the finger. A tension spring 20 secured to the finger below its pivotal point and to the side of the boxing, acts to normally keep the finger raised; as in Fig. 2. Near the standard 19 a needle post 21 is provided. The post 21 carries a threading needle 22 which lies in the same plane as tube 2 and is inserted part way into a bore in the side of the boxing, alined with the end of the tube; as in Fig. 1.

The operation is as follows: The shuttle is placed between the blocks 8 so that 'the bore in the side of the boxing is alined with the tube 2. The thread from the shuttle is then laid along channel 5, across the slot 3 of tube 2, along slot 6, and through the slot 6 of block 8. Boxing 7 is then pushed down wardly, against the action of spring 14. This forces the cam portion 17 of finger 15 against standard 19, so as to rotate the finger downwardly and inwardly; as will be evident from Fig. 2. The finger, as it is forced downwardly engages the thread just in front of the slot 3 and forces it thereinto. hen the finger has reached this position the lower shoulder of the cam portion 17 has reached the top of the standard, and travels therealong, without further rotating the finger, as will be evident; so that now the finger simply acts to hold the thread pressed firmly into the slot 3. By forcing the box 7 down still farther the outwardly presented hook 23 of needle 22 is forced in back of the thread. hen the box is released it is drawn upwardly by spring 1 1 and the needle engages the thread, which is still held taut by finger 15, so as to draw it through tube 2, and thus thread the shuttle. As the box returns to its original position the finger 15 will be returned to its original position also, by

spring 20, so as to be ready for another threading.

This device may be bolted to any suitable bracket or standard, on the machine, near the operator, so as to be always available 01 use.

It is thought that the construction, operation, and use of the invention will be clear from the preceding detailed description.

Changes may be made in the construction, arrangement, and disposition of the several parts of the invention without in any way departing from the field and scope of the same, and it is meant to include all such within this application wherein only a preferred form has been disclosed.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

, In a device of the character described; a base plate; a box, obliquely slidable thereon; means for securing the box to the base plate and for limiting and controlling its movement; slidably adjustable shuttle holding means contained within the box; a shuttle carried thereby, and provided near one end with a horizontal, centrally slotted, and angularly disposed tube, one end of which is alined with a bore in one side of the box; a standard secured to the base plate, contiguous to one side of the box and near one end thereof; a threading needle mounted in the standard in alinement with the tube and in the same plane therewith; a pivotallymount- 1* ed cam, thread depressing means, mounted on the side of the box and adapted to depress the thread across the slot in the tube; guiding means therefor; means for depressing the thread depressing means as the box Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatents,

Washington, D. C. 

